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SubjectRe: __GFP_IO && shrink_[d|i]cache_memory()?
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> quota drop, and that involves quota writeback if it was the last inode
> on that particular quota struct.
>
> shrinking the icache _usually_ involves no IO, but the quota case is
> an exception which a lot of developers won't encounter during testing.

We've had a history of weird quota deadlocks in 2.0 and earlier 2.2. Is there
a reason quota block writeback cannot be queued or handled by a thread ?

Alan

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